机构:[1]Peking Univ, Shenzhen Hosp, Reprod Med Ctr, Shenzhen, Guangdong, Peoples R China[2]Sichuan Agr Univ, Coll Life Sci, Yaan, Peoples R China[3]Shenzhen Univ, Int Canc Ctr, Med Sch, Shenzhen, Peoples R China[4]Chinese Acad Sci Beijing, Inst Zool, State Key Lab Integrated Pest Management, Beijing, Peoples R China[5]Southern Univ Sci & Technol, Sch Med, Shenzhen, Guangdong, Peoples R China[6]Univ Missouri, Dept Vet Pathobiol, Columbia, MO USA[7]Peking Univ Third Hosp, Ctr Reprod Med, Beijing, Peoples R China[8]Guangdong Second Prov Gen Hosp, Reprod Med Ctr, Fertil Preservat Lab, Guangzhou, Peoples R China
Previous studies have shown sleep deprivation is increasingly reported as one of the causes of female infertility. However, how and by what relevant mechanisms it affects female fertility remains unclear. In this study, female mice underwent 72 hours of total sleep deprivation (TSD) caused by rotating wheel or 2 different controls: a stationary wheel, or forced movement at night. Even though, there was no significant difference in the number of eggs ovulated by the TSD mice compared to the control groups. Overall levels of estrogen and FSH were lower throughout the estrus cycle. A total of 42 genes showed significant differential expression in GV oocytes after TSD by RNA sequencing (RNA-Seq). These included genes were enriched in gene ontology terms of mitochondrial protein complex, oxidoreductase activity, cell division, cell cycle G1/S phase transition, as well as others. The increased concentrations of reactive oxygen species (ROS) in germinal vesicle (GV) and metaphase II (MII) oocytes from TSD mice were observed, which might be induced by impaired mitochondrial function caused by TSD. The GV oocytes displayed increased mitochondrial DNA (mtDNA) copy number and a significant transient increase in inner mitochondrial membrane potential (Delta psi m) from the TSD mice probably due to compensatory effect. In contrast, MII oocytes in the TSD group showed a decrease in the mtDNA copy number and a lower Delta psi m compared with the controls. Furthermore, abnormal distribution of mitochondria in the GV and MII oocytes was also observed in TSD mice, suggesting mitochondrial dysfunction. In addition, abnormal spindle and abnormal arrangement of chromosomes in MII oocytes were markedly increased in the TSD mice compared with the control mice. In conclusion, our results suggest that TSD significantly alters the oocyte transcriptome, contributing to oxidative stress and disrupted mitochondrial function, which then resulted in oocyte defects and impaired early embryo development in female mice.
基金:
This study was supported by The
National Natural Science Foundation of China
[82001541]; the National Natural Science
Foundation of China [31530049]; the Basic
Research Key Project of Shenzhen Science and
Technology Innovation Commission [JCYJ20200109140623124]; Sanming Project of
Medicine in Shenzhen [No.SZSM202211043].
第一作者机构:[1]Peking Univ, Shenzhen Hosp, Reprod Med Ctr, Shenzhen, Guangdong, Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
Yi Zi-Yun,Liang Qiu-Xia,Zhou Qian,et al.Maternal total sleep deprivation causes oxidative stress and mitochondrial dysfunction in oocytes associated with fertility decline in mice[J].PLOS ONE.2024,19(10):doi:10.1371/journal.pone.0306152.
APA:
Yi, Zi-Yun,Liang, Qiu-Xia,Zhou, Qian,Yang, Lin,Meng, Qing-Ren...&Sun, Qing-Yuan.(2024).Maternal total sleep deprivation causes oxidative stress and mitochondrial dysfunction in oocytes associated with fertility decline in mice.PLOS ONE,19,(10)
MLA:
Yi, Zi-Yun,et al."Maternal total sleep deprivation causes oxidative stress and mitochondrial dysfunction in oocytes associated with fertility decline in mice".PLOS ONE 19..10(2024)